Dr Rowan Williams guided church 'through challenge and change'

As a man of great learning and humility, he has guided the church through times of challenge and change. He has sought to unite different communities and offer a profoundly humane sense of moral leadership that was respected by people of all faiths and none. As Prime Minister, I have been grateful for his support and advice and for the work he has done around the world, particularly in Africa where he has taken such a close interest in the Sudan.